user
Given a programming language, explain the syntax for a function.

Now complete the following instance -
Input: Python
Output:
assistant
In Python, a function is written with the keyword "def", followed by the function name, and a set of parentheses with parameters inside. After the parentheses, the function is followed by a colon, and then the code block which defines the instructions of the function. Finally, the function ends with the keyword "return" to return a value.